pi 1990s brick phone

No More Paperweight: This Vintage Brick Phone Is Back Online

March 13, 2026 by 4 Comments

Remember those brick cellphones in the 1990s? They were comically large by today’s standards. These phones used the 1G network to communicate and, as such, have been unusable for decades now. However [Alan Boris] has resurrected this classic phone to operate today.

Originally costing as much as today’s top-of-the-line phones, but instead of weighing just a few ounces this classic Motorola DynaTAC 8000 Classic 2 tips the scales at a hefty 1.5 lbs. [Alan Boris] decided to not just bring the electronics back to life, but to even stuff a modern cellphone inside it to make it fully functional. Given the size of this phone, finding room for the new innards wasn’t much of a challenge. In fact, after the retrofit there was less in the phone than when it started life.

Using a perfboard and some tactile switches he was able to sense the button presses on the phone’s keypad and relay those to a Raspberry Pi Pico 2. The Pico in turn drove a small color LCD to replicate the original screen and controlled a pair of ADG729 boards used to dial the BM10 cellphone within this cellphone. The BM10 is a cellphone about the size of a 9V battery, making it easy to put inside the DynaTAC and bring the handset back to the modern cellular network.

Thanks [Alan Boris] for the tip! Be sure to check out our other cellphone hacks as well as some of our other retrofit hacks.

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Hackaday Podcast Episode 361: Hackaday Podcast Mailbag, A Phone Is Not A Computer, 3D Printing History Is New Again

March 13, 2026 by 1 Comment

Join Hackaday Editors Elliot Williams and Tom Nardi as they cover their favorite hacks and stories from the week. The episode kicks off with some updates about Hackaday Europe and the recently announced Green Power contest, as well as the proposal of a new feature of the podcast where listeners are invited to send in their questions and comments. After the housekeeping is out of the way, the discussion will go from spoofing traffic light control signals and the line between desktop computers and smartphones, all the way to homebrew e-readers and writing code with chocolate candies. You’ll hear about molding replacement transparent parts, a collection of fantastic tutorials on hardware hacking and reverse engineering, and the recent fireball that lit up the skies over Germany. The episode wraps up with a fascinating look at how the developer of Pokemon Go is monetizing the in-game efforts of millions of players.

Check out the links below if you want to follow along, and as always, tell us what you think about this episode in the comments!

Download this episode in DRM-free MP3 so you can listen to it while doing unpaid labor in Pokemon Go.

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Running A PC Off AA Cells With Buck Converters Really Boosts Performance

March 13, 2026 by 8 Comments

After the previous attempt of running a PC off AA cells got a lot of comments, [ScuffedBits] decided to do the scientifically responsible thing and re-ran the experiment with all the peer-reviewed commentary in mind. Although we noted with the previous experiment that only alkaline cells were used, [ScuffedBits] rectified this by stating that both carbon and alkaline AA cells were used the first time around.

For this second experiment a number of changes were made, though still both carbon and alkaline cells were put into the mix. To these a third string was added, consisting of NiMH cells, for a total of 64 cells with each of the three strings outputting around 25 VDC when fully charged. These fed a cheap buck regulator module to generate the 12 VDC for the DC-DC converter on the mainboard’s ATX connector.

Although it appears that the same thin Cat-5e-sourced wiring was used, with the higher voltage this meant a lower current, making it significantly less sketchy. Unlike with the first experiment, this time around the Core i3 530 based PC could run much longer and even boot off the DIY battery pack. After a quick game and pushing through a Cinebench run for 64 Watts maximum power usage, it turned out that there was still plenty of time for more fun activities, such as troubleshooting Minecraft and even playing it.

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This Week In Security: Plenty Of Patches, Replacing Old Gear, And Phrack Calls For Papers

March 13, 2026 by 5 Comments

When Friday the Thirteenth and Patch Tuesday happen on the same week, we’re surely in for a good time.

Anyone who maintains any sort of Microsoft ecosystem knows by now to brace for impact come Patch Tuesday; March brings the usual batch of “interesting” issues, including:

  • Two high-risk Microsoft Office vulnerabilities (CVE-2026-26110 and CVE-2026-26113), both of which allow execution of arbitrary code with no user interaction other than opening a hostile file. Vulnerabilities like these are especially dangerous in environments where transferring Office documents is considered normal, such as (unsurprisingly) offices, but also for home users who may not be savvy enough to avoid opening hostile files. Arbitrary code execution allows the attacker to run essentially any commands the user would be able to run themselves, typically leveraging it to install remote access or keyboard logging malware.
  • Excel gets a different vulnerability, CVE-2026-26144, which allows leaking of data through a cross-site scripting vulnerability. Coupled with CoPilot Agent, this can be used to leak contents of spreadsheets, again with no direct user interaction.

On the server and container side, this month includes a fairly typical collection of patches for SQL Server, and vulnerabilities in the Microsoft-hosted device pricing and payment orchestrator services, which have been automatically patched by Microsoft.

When it’s Time to Replace Old Gear

We all love getting every ounce of usability from our old gear, but sometimes enough is enough – at least with the stock firmware. The FBI has issued a warning about decommissioning end-of-life routers made by several large companies, with eleven Linksys and one Cisco branded routers being specifically called out for vulnerabilities under active exploitation.

A notice such as this that an exploit is under active exploitation means that a theoretical vulnerability has been commoditized into specific attacks, typically used against all devices accessible from the Internet. It’s generally safe to assume that at this point, if a vulnerable device is exposed to the Internet, it’s been compromised.

The FBI notice doesn’t call out the specific vulnerabilities used, however there’s a wide variety to pick from:

  • CVE-2025-60690 is a simple buffer overflow allowing code execution from parameters passed to the web UI.
  • CVE-2025-60692 is a buffer overflow allowing arbitrary code execution from the local network via control of entries in /proc/net/arp – unlikely to be used for a remote compromise, but still amusing.
  • CVE-2025-60694 and CVE-2025-60693 are both additional stack overflow and code execution from web bugs, which sets a real pattern for the quality of the webserver in the stock firmware.
  • CVE-2025-60689, CVE-2025-60691 and CVE-2025-34037 however appear to be the most likely culprits, both allowing arbitrary execution on the router without authentication, with CVE-2025-34037 rated a full 10/10 on the vulnerability scale and explicitly mentioning being used to deploy worm firmware.

Once an attacker is inside your router, the possible havoc they might cause is extensive:

  • Redirecting requests to malicious or fake websites by taking control of the DNS or rewriting requests at other layers.
  • Exposing systems on your private network – such as less secured IoT devices or other local devices with weak internal passwords – to the attackers.
  • Using your Internet connection to perform other attacks or pivots. Installing proxies on home equipment is a common method used for international attackers to appear as a normal home user in a target country.
  • Reselling your Internet access. Ever wonder how “free” VPN apps are able to offer access in random countries? Often an international VPN is just an infected home user!
  • Adding you to a botnet. Some of the largest distributed denial of service (DDoS) attacks have been carried out not by systems with huge bandwidth, but by tens of thousands (or more) of comrpomised small home routers, cameras, and other IoT type devices acting together.

If you have a Linksys E1200, E2500, E1000, E4200, E1500, E3000, E3200, E1550, WRT320N, WRT160N, WRT310N, or a Cisco M10 router still in use, the time is now to finally upgrade it – or at least explore the options of third-party firmware like OpenWRT. Unfortunately, many of these devices are so old that even OpenWRT may have difficulty running well on them, but all the more reason to update to something a little newer!

State-level Exploits in the Wild

In a pattern which should be familiar to anyone who had to deal with the leak of the Eternal Blue exploit as part of a dump of tools from the NSA which later evolved into the Wannacry and NotPetya global ransomware campaigns, another government-backed exploit toolkit has been captured and converted to a more generic criminal exploit.

Google Threat Intelligence documents the “Coruna” exploit kit, a rare public example of an attack against iPhones from iOS 13 to iOS 17.2.1. Often we see “advanced attack methods” or “targeted specific attacks” in release notes; rarely do we get further insight into the actual attacks!

Evolving from a government-backed tool to a financial crimeware exploit deployed widely to steal cryptocurrencies is interesting on its own, but perhaps the most fascinating aspect is the insight into how difficult modern exploits can be. Coruna combines 23 exploits into 5 chained attacks to be able to actually execute code from a web page. The final payload of the exposed version doesn’t deliver a spy payload, but instead focuses on cryptocurrency: searching for QR codes on disk to discover wallet addresses and saved recovery keys, wallet recovery phrases, and mentions of bank accounts, and leveraging those to steal cryptocurrency.

In true Google fashion, they’ve published indicators of compromise (IOCs) to inspect if a device has been attacked and a map of the control domains. Additional work deobfuscating the attacks and payloads can be found on GitHub here.

More Government Warnings

The US Government Cyber Defense Agency (CISA) has added additional warnings to the Known Exploited Vulnerabilities database (KEV) database. The KEV attempts to distill the torrent of security issues assigned a CVE into the most actionable vulnerabilities which have been observed being used in the wild. CISA advises not only federal and government agencies, but offers guidance for businesses of all sizes.

Many vulnerabilities on the KEV already have fixes. Paradoxically, this can sometimes make a vulnerability higher risk. Attackers have two advantages: a patch to reverse engineer to discover the exact mechanisms to trigger the flaw, and a motivation to use any exploits on a massive scale, knowing that the window of opportunity is about to close. Most of these vulnerabilities will likely be of interest mostly to readers who are in the enterprise space, but the first one regarding Android is a good reminder to everyone that the KEV isn’t just for giant companies.

As for the latest known exploited issues:

  • CVE-2026-21385 sounds very boring – an integer overflow in Qualcomm graphics drivers – except that those chipsets and drivers are found in a huge percentage of Android phones, tablets, set-top boxes, and likely more than a few smart TVs. This fix is bundled into the March Android security release and may prove critical. Remember to keep your devices up to date!
  • CVE-2026-22719 is a patched vulnerability in VMWare enterprise software (Aria Operations, specifically); if you need to care about enterprise-scale VMWare, you’ll care about this one!
  • CVE-2021-22054 resurfaces from 2021, again in VMWare enterprise consoles. The number of unpatched systems exposing a vulnerability from 2021 must be quite scary.
  • CVE-2025-26399 is a vulnerability in SolarWinds help desk sofware, which is a return of a bug not fully fixed in CVE-2024-28988. Which is, itself, the return of a bug not fully fixed in CVE-2024-28986. Look, bug fixing can be hard.
  • CVE-2026-1603 is an authentication bypass in Ivanti Endpoint Manager which allows access to stored credential secrets. Ivanti is an endpoint and device management system, used for monitoring, patching, upgrading, and controlling access on corporate device fleets.

Phrack Calls for Papers

The venerable Phrack has an open call for papers to be contributed to the summer issue. Released since 1985, Phrack has been a font of telecom and computer security hackery, including the critical “Smashing the Stack for Fun and Profit”, one of the first explanations of the now-ubiquitous buffer overflow and stack smashing attack.

If you think you’ve got something to contribute, or just want to check out their awesome retro demo scene loading page and some back issues, head over to the Phrack website.

OS/2 Never Went Away. Its Successor Has Received An Update

March 13, 2026 by 27 Comments

ArcaOS is an operating system you might not have heard of, but you will recognize it when we tell you that it’s the direct descendant of IBM’s OS/2. It’s just received a major update, and delivers this persuasive argument for its uptake:

“How about a commercial operating system which doesn’t spy on you, does not report your online activity to anyone, and gives you complete freedom to choose the applications you want to use, however you want to use them?”

We’re guessing that a higher-than-average number of Hackaday readers use open-source operating systems, but in a world in which the commercial OS everyone loves to hate is ever more turning the Play button into the Pay button, we have to admit that’s attractive if you pay for your software.

This update, version 5.1.2, brings support for the very latest UEFI systems to the table, keeping the platform alive in a manner we’d never have guessed would happen back in the 1990s. It’s true it’s a 32-bit system rather than 64-bit, and you’d be unlikely to buy it for your high-end gaming machine, but we remember OS/2 Warp back in the day as being very nice indeed and particularly stable. We’re interested enough to have put in a cheeky request for a review ISO, so should that come off we’d love to give it the Jenny’s Daily Drivers treatment.

ArcaOS has been mentioned here before. Do any of our readers encounter it in your daily lives? We’d love to hear in the comments.

Perfecting The Shape-Changing Fruit Bowl

March 13, 2026 by 8 Comments

Fruit bowls have an unavoidable annoyance– not flies and rotten fruit, those would be avoidable if your diet was better. No, it’s that the bowl is never the right size. Either your fruit is sad and lonely in a too-large bowl, or it’s falling out. It’s the kind of existential nightmare that can only be properly illustrated by a late-night infomercial. [Simone Giertz] has a solution to the problem: a shape-changing fruit bowl.

See, it was one thing to make a bowl that could change shape. That was easy, [Simone] had multiple working prototypes. There are probably many ways to do it, but we like [Simone]’s use of an iris mechanism in a flat base to allow radial expansion of the walls. The problem was that [Simone] has that whole designer thing going on, and needs the bowl to be not only functional, but aesthetically pleasing. Oh, and it would be nice if expanding the bowl didn’t create escape routes for smaller fruits, but that got solved many prototypes before it got pretty.

It’s neat to see her design process. Using 3D printing and CNC machining for prototyping is very familiar to Hackaday, but lets be honest — for our own projects, it’s pretty common to stop at “functional”. Watching [Simone] struggle to balance aesthetics with design-for-manufacturing makes for an interesting 15 minutes, if nothing else. Plus she gives us our inspirational quote of the day: “As much as I feel like I’m walking in circles, I know that product development is a spiral”. Something to keep in mind next time it seems like you’re going around the drain in your own projects. Just be warned, she does have a bit of a potty mouth.

We’ve featured [Simone]’s design decisions here, if you’re interested in seeing how she goes the rest of the way from project to product. We’re pretty sure her face-slapping-alarm clock never made it into the SkyMall catalog, though.

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Nintendo’s Family BASIC Keyboard Gets USB Upgrade

March 12, 2026 by No comments

America knew it as the Nintendo Entertainment System, but in Japan, it was the Family Computer (Famicom). It was more than just a home console—it was intended to actually do a whole lot more. All you had to do was plug in the keyboard and chuck in the right Family BASIC cartridge, and you had a computer hooked up to your TV! [Lucas Leadbetter] came across an old Family BASIC keyboard recently, and set about making it more useful in our modern age with a simple USB upgrade.

[Lucas] started with research, and soon found plenty of schematics and details on the keyboard on the NESdev wiki page. Hunting further turned up a video from [Circuit Rewind], who demonstrated how to hook up the keyboard to a Raspberry Pi Pico, including how to interface with the onboard chips to scan the keys. These resources told [Lucas] enough to get going—and that it should be as simple as wiring some custom hardware up to the internal keyboard matrix connector to get it speaking to USB.

[Lucas] went a slightly different path to [Circuit Rewind], implementing the popular QMK firmware to suit the Family Basic keyboard on an Adafruit KB2040. The Adafruit part is basically an RP2040 microcontroller slapped onto a tiny PCB in a form factor that’s ideal for making custom keyboards. [Lucas] was able to reimplement the scanning logic that [Circuit Rewind] had reverse engineered previously, and had the keyboard up and running in short order with all the usability benefits of the QMK firmware. Files are on Github for those eager to recreate the work.

As far as usability goes, [Lucas] notes that the Family BASIC keyboard is more of a conversation piece than a daily driver, thanks to its rather poor feel. Duly noted. We’ve explored how software development is done in Family BASIC before, too. Video after the break.

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